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Topic: Help needes: EOS 7D - noisy pictures (Read 11883 times)

I bought an refurbished 7D for my son. A few days ago, he was on an airshow and took some shots.But he is very disappointed, because the pictures are very noisy.He shot faster then 1/1250, Auto Iso, Exposure: spot, +1/3-2/3.

So I called the Canon service center, who told me that this is normal for the 7D. Is it really? Which Iso is maximum to get no noisy pictures?

As an attachment, one example, where the noise is extremly visible. This frame shows the full pictureThanksDani

Dani,You said "This frame shows the full picture". I have a 7D and I've never seen noise like this using ISO 200 except for extreme crops or if you push the exposure a lot in post proccesing. Taking a close look at the noise it looks more like JPEG artifacts. I can even see what looks like the 8x8 macroblock structure.

If this truly is the full image that was captured I would ask the following.1. What recording format were you using? Large, Medium, Small, RAW, M-RAW, S-RAW?2. How was this rendered to the JPEG image shown? In the camera, in post processing. With what tool and setting.

It looks like JPG compression noise..maybe either in camera or was adjusted again using software?

I typically shoot in RAW mode only and turn off Highlight tone priority and high ISO noise reduction. Sometimes the HINR can introduce noise even when not shooting high ISO....even in RAW mode.

Also, you can overexpose the sky quite a bit and pull the exposure back down with software like lightroom. That also can reduce noise. However I have not seen this kind of noise on any of my canon bodies including my old T2i.

This photo was taken in normal raw. I took an screenshot of this picture in Lightroom, because the aperture,ISO,... are visible.

In my opinion, the Cam suffers from an electronic damage.I looked at the pictures (about 2500) and some things make me think of an electronic problem:1.) I takes about 8-10 pictures from an (even slow moving (rolling) plane until the first one is really sharp. 2.) Some pics are sharp and have an good IQ at Iso 800 ( max. Iso 800), others are noisy at 200....

Pretty hard to diagnose from one picture or even one shoot. I'd say take it outside and shoot a bunch of simple pictures – flowers, trees, pets, etc. See if you are getting noise under normal conditions. If so, send it back.